Wear Research Of Compressor Moving Parts

In modern industry,friction and wear are the important reasons for the failure of parts.In order to reduce the economic loss,people pay more and more attention to the research on the basic rules and mechanisms of friction and wear.Crank connecting rod mechanism is an important transmission mechanism of reciprocating compressor.It is the key part to complete the energy conversion.It is the main part of wear and tear.It is important to improve the performance of crank rod mechanism and prolong the service life by analyzing the cause of wear.This paper takes a certain type compressor as the research object and takes the compressor wear failure as the breakthrough point.Through the analysis of the cause of the failure,the influence factors are determined by the characteristics of the wear morphology,which are the load and the speed respectively.In order to verify and analyze the influencing factors,the simplified model of the crankshaft connecting rod of the compressor mechanism is established,and the theoretical knowledge of mechanics is used to get the phase.According to the motion equation of the target,the relationship between the mechanics of the piston crankshaft and the connecting rod is determined.The velocity law of the crankshaft connecting rod is studied by using the kinematics theory,and the mathematical theoretical calculation formula is established.The speed relation of the crank and connecting rod mechanism is determined.By means of ANSYS analysis and contact algorithm,a sliding wear fatigue model is established by numerical solution.The relationship between load and wear is analyzed under the sliding wear fatigue model.The simulation and analysis of the 3D model are carried out with the simulation software of Pro-E and workbench to determine the effect of load on wear and wear.The accuracy of the software calculation results,the design experiment scheme,the contrast test of the compressor with different loads at the same speed,and the analysis of the crankshaft wear of the compressor after 500 hours of wear test,verify the correctness of the simulation simulation.The dynamic simulation of rotational speed is established by ADAMS.Based on the Lagrange dynamic equation,a rigid body dynamic simulation model of the subsystem of the crankshaft connecting rod system is established.The finite element software is used to discretize the crankshaft,and the generated modal files are introduced into the dynamic software,and the dynamic simulation model of the flexible body of a bearing rotor system is established.The bearing capacity of the crankshaft under three different rotational speeds is analyzed.The influence of speed on wear is obtained.In order to verify the correctness of the simulation software,the experiment was designed to test the wear of the compressor with the same load and different speed.After the test was completed,the wear amount of the crankshaft was detected,and the influence of the speed on the wear was analyzed according to the change of the wear amount.In this paper,the simulation results of the simulation analysis software have strong accuracy,which provides an effective reference for the analysis of the wear causes of the compressor.